What is the Wolverine stack?

Wolverine is a community-coined name for the combined use of BPC-157 and TB-500, named after the Marvel character known for accelerated healing. The two peptides are commonly cited together in community-reported recovery protocols. Some vendors package both peptides in a single combined vial — typically 5mg BPC-157 + 5mg TB-500, sometimes 10mg + 10mg — to simplify reconstitution. Community sources describe the combined-vial format as a packaging convenience rather than a pharmacologically distinct product. The reconstitution math for the combined vial follows the same logic as a single-peptide vial — the bacteriostatic water dissolves both peptides simultaneously, and the resulting concentration applies to each peptide independently.

How is a combined 5mg + 5mg Wolverine vial reconstituted?

Community sources commonly cite 2 mL of bacteriostatic water for a combined 5mg BPC-157 + 5mg TB-500 vial. That produces 2.5 mg/mL of each peptide simultaneously. On a U-100 insulin syringe, each 10-unit mark corresponds to 0.25 mg of each peptide. A draw to the 10-unit mark delivers 250mcg of each peptide. Some vendor sheets cite 1 mL of bacteriostatic water for the same combined vial, producing 5 mg/mL of each peptide — where each 10-unit mark corresponds to 0.5 mg of each. The 2 mL reconstitution is more commonly cited because it makes the 250mcg dose step cited in community protocols land cleanly on the 10-unit mark.

How long does a reconstituted BPC-157 or TB-500 vial last?

USP guidance describes a 28-day multi-dose window for bacteriostatic water itself under aseptic technique. Community sources and vendor documentation commonly cite BPC-157 as stable for two to four weeks refrigerated at 2-8°C after reconstitution. TB-500 is similarly cited as stable for two to four weeks refrigerated. Research literature on peptide stability notes that repeated temperature cycling, light exposure, and freeze-thaw cycles accelerate degradation. Community sources cite consistent refrigeration and shielding from light as the standard storage approach. Lyophilized (unreconstituted) vials are typically more stable and are commonly cited as stable for months to years when stored at freezer temperatures.

Bac Water for BPC-157 + TB-500 (Wolverine Stack, 2026)

BPC-157 and TB-500 are the two most-cited healing peptides in community recovery-protocol documentation. Both reconstitute the same way: bacteriostatic water added to a lyophilized peptide vial, swirled gently, refrigerated. Several vendors also package them together as a combined "Wolverine" vial, which is what makes covering them together useful.

Research-context information only. BPC-157 and TB-500 are research chemicals without FDA approval for the indications community sources commonly cite. The reconstitution math reflects vendor documentation and community-reported protocols. Research and community sources describe tendon-recovery, soft-tissue, and gut-lining applications; outcome claims about specific injuries are not supported. This article reports what has been documented, not what should be done. Consult a licensed physician for personal medical decisions.

BPC-157 reconstitution math

BPC-157 is most commonly packaged in 5mg or 10mg lyophilized vials, sometimes 2mg or 20mg depending on the vendor.

5mg BPC-157 vial: Community sources and vendor reconstitution sheets commonly cite 1 mL of bacteriostatic water for a 5mg BPC-157 vial. That produces a concentration of 5 mg/mL (5000 mcg/mL). On a U-100 insulin syringe, each 10-unit mark corresponds to 0.5 mg (500 mcg). The 250mcg and 500mcg dose steps documented across community protocols land on 5 and 10 unit marks respectively.

Some vendor sheets and community sources cite 2 mL of bacteriostatic water for the same 5mg vial, producing 2.5 mg/mL. On that concentration, each 10-unit insulin syringe mark corresponds to 0.25 mg (250 mcg) — the 250mcg dose step then lands on the 10-unit mark and the 500mcg dose step on the 20-unit mark. Both ratios are well-documented in community references.

10mg BPC-157 vial: Community sources commonly cite 2 mL of bacteriostatic water for a 10mg BPC-157 vial. That produces a concentration of 5 mg/mL — matching the 5mg-vial concentration. The dose-per-unit math is identical: 0.5 mg per 10-unit mark on a U-100 insulin syringe. Alternative documentation cites 4 mL of bacteriostatic water for the same 10mg vial, producing 2.5 mg/mL.

TB-500 reconstitution math

TB-500 (thymosin beta-4 fragment) is commonly packaged in 5mg, 10mg, or 25mg lyophilized vials.

5mg TB-500 vial: Community sources commonly cite 1 mL of bacteriostatic water for a 5mg TB-500 vial, producing a concentration of 5 mg/mL. On a U-100 insulin syringe, each 10-unit mark corresponds to 0.5 mg. The 1mg maintenance dose cited in community protocols lands on the 20-unit mark; the 2.5mg loading dose lands on the 50-unit mark.

10mg TB-500 vial: Community sources commonly cite 2 mL of bacteriostatic water for a 10mg TB-500 vial. That produces a concentration of 5 mg/mL — matching the 5mg-vial concentration. The dose-per-unit math is identical: 0.5 mg per 10-unit insulin syringe mark. The 2.5mg loading dose and 1mg maintenance dose cited in community protocols translate to 50 and 20 unit marks respectively.

Alternative documentation cites 5 mL of bacteriostatic water for the same 10mg vial, producing 2 mg/mL — where each 10-unit mark corresponds to 0.2 mg. The 5 mg/mL concentration is the more commonly cited choice because the higher concentration keeps the injection volume smaller for the relatively large TB-500 dose steps.

25mg TB-500 vial: Community sources commonly cite 5 mL of bacteriostatic water for a 25mg TB-500 vial, producing a concentration of 5 mg/mL — matching the smaller-vial concentrations. The dose-per-unit math is identical. Alternative documentation cites 2.5 mL producing 10 mg/mL, which doubles the concentration and halves the injection volume; community sources note both ratios in practice.

The Wolverine combined-vial format

"Wolverine" is a community-coined name for the combined use of BPC-157 and TB-500 in recovery-protocol documentation. The name references the Marvel character known for accelerated healing.

Several vendors package the two peptides in a single combined vial — most commonly 5mg BPC-157 + 5mg TB-500, sometimes 10mg + 10mg. Community sources describe the combined-vial format as a packaging convenience: one vial, one reconstitution, one draw per dose.

5mg + 5mg combined Wolverine vial: Community sources commonly cite 2 mL of bacteriostatic water for a combined 5mg BPC-157 + 5mg TB-500 vial. That produces 2.5 mg/mL of each peptide simultaneously. On a U-100 insulin syringe, each 10-unit mark corresponds to 0.25 mg (250 mcg) of each peptide. A draw to the 10-unit mark delivers 250mcg of each peptide; a draw to the 20-unit mark delivers 500mcg of each.

Alternative documentation cites 1 mL of bacteriostatic water for the same combined vial, producing 5 mg/mL of each peptide — where each 10-unit mark corresponds to 0.5 mg of each. The 2 mL reconstitution is more commonly cited because it makes the 250mcg dose step land cleanly on the 10-unit mark.

10mg + 10mg combined Wolverine vial: Community sources commonly cite 4 mL of bacteriostatic water for a combined 10mg + 10mg vial, producing 2.5 mg/mL of each peptide. Alternative documentation cites 2 mL producing 5 mg/mL of each. The math scales linearly with the smaller combined vial.

Storage notes

Bacteriostatic water itself carries a 28-day multi-dose window under USP guidance with aseptic technique. BPC-157 and TB-500 stability after reconstitution varies by molecule and storage conditions. Community sources and vendor documentation commonly cite:

Refrigerated storage at 2-8°C after reconstitution
Shielding from light — amber vials or opaque storage box
Finishing the reconstituted vial within the 28-day bacteriostatic water window — typically two to four weeks for both peptides
Avoiding repeated temperature cycling — keeping the vial in cold storage rather than removing it for room-temperature periods
Avoiding freeze-thaw cycles on the reconstituted vial — community sources cite this as a common stability failure mode

Lyophilized (unreconstituted) BPC-157 and TB-500 vials are typically more stable than reconstituted ones. Community sources cite long-term storage of unreconstituted peptide at freezer temperatures (-20°C or below) as the standard approach for vials not yet reconstituted.

Common mistakes (community reports)

Community sources and vendor support documentation commonly cite a handful of recurring reconstitution mistakes:

Adding bacteriostatic water too forcefully — directing the stream at the lyophilized peptide cake rather than the vial wall is reported to cause denaturation of some peptides. Community sources cite slow injection down the vial wall as the standard technique.
Vigorous shaking after reconstitution — gentle swirling is cited as the standard technique. Vigorous shaking is reported to denature some peptides.
Using cloudy bacteriostatic water — cloudy water is reported as a quality signal that the bacteriostatic water itself may be contaminated or off-spec. Community sources cite clear water as the standard appearance.
Reconstituting and leaving at room temperature — community sources cite immediate refrigeration after reconstitution as the standard.

Common questions

The FAQ at the top of this article covers vial-size reconstitution math, the Wolverine combined-vial format, and the 28-day storage window.

Bottom line

BPC-157 and TB-500 reconstitute with bacteriostatic water using vendor-documented and community-cited ratios that depend on vial size and concentration preference. The 5 mg/mL concentration produced by 1 mL into a 5mg vial (or 2 mL into a 10mg vial) is the most commonly cited because it keeps injection volumes small for the relatively large dose steps community sources cite. The combined Wolverine vial reconstitutes the same way as a single-peptide vial — 2 mL of bacteriostatic water into a 5mg+5mg vial produces 2.5 mg/mL of each peptide, with clean dose-per-unit math on a U-100 insulin syringe.

What Is Bacteriostatic Water? Benzyl Alcohol + Uses (2026) — definition, USP standards, benzyl alcohol mechanism
How Long Does Bacteriostatic Water Last? 28-Day Rule (2026) — the post-puncture window and storage variables
Bacteriostatic Water vs Sterile Water: Which to Use (2026) — when the 28-day window matters
Bac Water for Sermorelin, CJC-1295, Ipamorelin (2026) — GH-secretagogue reconstitution math in the same format
Bacteriostatic Water for GHK-Cu: Topical + Injection (2026) — copper-peptide reconstitution math for both routes

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